﻿// SAX parser interface.
// http://www.saxproject.org
// No warranty; no copyright -- use this as you will.
// $Id$
using System;
using java = biz.ritter.javapi;

namespace org.xml.sax
{

    /**
     * Basic interface for SAX (Simple API for XML) parsers.
     *
     * <blockquote>
     * <em>This module, both source code and documentation, is in the
     * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
     * See <a href='http://www.saxproject.org'>http://www.saxproject.org</a>
     * for further information.
     * </blockquote>
     *
     * <p>This was the main event supplier interface for SAX1; it has
     * been replaced in SAX2 by {@link org.xml.sax.XMLReader XMLReader},
     * which includes Namespace support and sophisticated configurability
     * and extensibility.</p>
     *
     * <p>All SAX1 parsers must implement this basic interface: it allows
     * applications to register handlers for different types of events
     * and to initiate a parse from a URI, or a character stream.</p>
     *
     * <p>All SAX1 parsers must also implement a zero-argument constructor
     * (though other constructors are also allowed).</p>
     *
     * <p>SAX1 parsers are reusable but not re-entrant: the application
     * may reuse a parser object (possibly with a different input source)
     * once the first parse has completed successfully, but it may not
     * invoke the parse() methods recursively within a parse.</p>
     *
     * @deprecated This interface has been replaced by the SAX2
     *             {@link org.xml.sax.XMLReader XMLReader}
     *             interface, which includes Namespace support.
     * @since SAX 1.0
     * @author David Megginson
     * @version 2.0.1 (sax2r2)
     * @see org.xml.sax.EntityResolver
     * @see org.xml.sax.DTDHandler
     * @see org.xml.sax.DocumentHandler
     * @see org.xml.sax.ErrorHandler
     * @see org.xml.sax.HandlerBase
     * @see org.xml.sax.InputSource
     */
    public interface Parser
    {

        /**
         * Allow an application to request a locale for errors and warnings.
         *
         * <p>SAX parsers are not required to provide localisation for errors
         * and warnings; if they cannot support the requested locale,
         * however, they must throw a SAX exception.  Applications may
         * not request a locale change in the middle of a parse.</p>
         *
         * @param locale A Java Locale object.
         * @exception org.xml.sax.SAXException Throws an exception
         *            (using the previous or default locale) if the 
         *            requested locale is not supported.
         * @see org.xml.sax.SAXException
         * @see org.xml.sax.SAXParseException
         */
        void setLocale(java.util.Locale locale);//	throws SAXException;


        /**
         * Allow an application to register a custom entity resolver.
         *
         * <p>If the application does not register an entity resolver, the
         * SAX parser will resolve system identifiers and open connections
         * to entities itself (this is the default behaviour implemented in
         * HandlerBase).</p>
         *
         * <p>Applications may register a new or different entity resolver
         * in the middle of a parse, and the SAX parser must begin using
         * the new resolver immediately.</p>
         *
         * @param resolver The object for resolving entities.
         * @see EntityResolver
         * @see HandlerBase
         */
        void setEntityResolver(EntityResolver resolver);


        /**
         * Allow an application to register a DTD event handler.
         *
         * <p>If the application does not register a DTD handler, all DTD
         * events reported by the SAX parser will be silently
         * ignored (this is the default behaviour implemented by
         * HandlerBase).</p>
         *
         * <p>Applications may register a new or different
         * handler in the middle of a parse, and the SAX parser must
         * begin using the new handler immediately.</p>
         *
         * @param handler The DTD handler.
         * @see DTDHandler
         * @see HandlerBase
         */
        void setDTDHandler(DTDHandler handler);


        /**
         * Allow an application to register a document event handler.
         *
         * <p>If the application does not register a document handler, all
         * document events reported by the SAX parser will be silently
         * ignored (this is the default behaviour implemented by
         * HandlerBase).</p>
         *
         * <p>Applications may register a new or different handler in the
         * middle of a parse, and the SAX parser must begin using the new
         * handler immediately.</p>
         *
         * @param handler The document handler.
         * @see DocumentHandler
         * @see HandlerBase
         */
        void setDocumentHandler(DocumentHandler handler);


        /**
         * Allow an application to register an error event handler.
         *
         * <p>If the application does not register an error event handler,
         * all error events reported by the SAX parser will be silently
         * ignored, except for fatalError, which will throw a SAXException
         * (this is the default behaviour implemented by HandlerBase).</p>
         *
         * <p>Applications may register a new or different handler in the
         * middle of a parse, and the SAX parser must begin using the new
         * handler immediately.</p>
         *
         * @param handler The error handler.
         * @see ErrorHandler
         * @see SAXException
         * @see HandlerBase
         */
        void setErrorHandler(ErrorHandler handler);


        /**
         * Parse an XML document.
         *
         * <p>The application can use this method to instruct the SAX parser
         * to begin parsing an XML document from any valid input
         * source (a character stream, a byte stream, or a URI).</p>
         *
         * <p>Applications may not invoke this method while a parse is in
         * progress (they should create a new Parser instead for each
         * additional XML document).  Once a parse is complete, an
         * application may reuse the same Parser object, possibly with a
         * different input source.</p>
         *
         * @param source The input source for the top-level of the
         *        XML document.
         * @exception org.xml.sax.SAXException Any SAX exception, possibly
         *            wrapping another exception.
         * @exception java.io.IOException An IO exception from the parser,
         *            possibly from a byte stream or character stream
         *            supplied by the application.
         * @see org.xml.sax.InputSource
         * @see #parse(java.lang.String)
         * @see #setEntityResolver
         * @see #setDTDHandler
         * @see #setDocumentHandler
         * @see #setErrorHandler
         */
        void parse(InputSource source);//	throws SAXException, IOException;


        /**
         * Parse an XML document from a system identifier (URI).
         *
         * <p>This method is a shortcut for the common case of reading a
         * document from a system identifier.  It is the exact
         * equivalent of the following:</p>
         *
         * <pre>
         * parse(new InputSource(systemId));
         * </pre>
         *
         * <p>If the system identifier is a URL, it must be fully resolved
         * by the application before it is passed to the parser.</p>
         *
         * @param systemId The system identifier (URI).
         * @exception org.xml.sax.SAXException Any SAX exception, possibly
         *            wrapping another exception.
         * @exception java.io.IOException An IO exception from the parser,
         *            possibly from a byte stream or character stream
         *            supplied by the application.
         * @see #parse(org.xml.sax.InputSource)
         */
        void parse(String systemId);//	throws SAXException, IOException;

    }

    // end of Parser.java
}
